postio-integrations: Instructions file for Claude Code

CLAUDE.md

postio-integrations CLAUDE.md is an instructions file for Claude Code from postio-uk/postio-integrations. It costs 1,675 tokens per session, scanned A, original, MIT.

A set of working instructions for coding agents in a repository containing multiple independently publishable JavaScript packages. It documents the pnpm workspace, Node and TypeScript setup, build commands, branches, and release process.

In plain words
What is it for?
Use it when changing, building, publishing, or deploying packages in the postio-integrations repository.
Why use it?
It gives agents the repository's conventions and commands instead of leaving them to infer how packages are built or released. It reduces mistakes when working across packages.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is postio-uk/postio-integrations's own configuration. It tells Claude Code how to work on postio-integrations itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything postio-integrations configures →

Reuse

Borrowing it

Nothing to install: this file belongs to postio-uk/postio-integrations. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/postio-uk/postio-integrations/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/postio-uk/postio-integrations

Made for: Claude Code.

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Per session 1,675 This file is loaded in full into every session.
When invoked 1,675 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01675 $0.01675
Opus 5.5 $0.00670 $0.00670
Sonnet 5.5 $0.00335 $0.00335
Haiku 4.5 $0.00168 $0.00168

Measured 1mo ago against content hash a6acdb1a357f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

postio-integrations CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

postio-integrations — agent notes

Operational notes for coding agents working in this repo.

Stack

  • pnpm workspace rooted at packages/. Each subdirectory under packages/<name>/ is an independently publishable npm package with its own package.json.
  • Node 22+. ESM only. TypeScript 5.x. openapi-typescript for type generation.
  • All public packages are MIT-licensed.

Build commands

# from packages/
pnpm install
pnpm -r run build                       # build every package
pnpm -F @postio/api-types run build     # build one package
pnpm -F "@postio/address-finder-bundled..." run build
                                        # build a package and its workspace deps
                                        # (the `<x>...` suffix is load-bearing —
                                        #  pnpm 10 reads it as "x and its deps"
                                        #  in topological order; the prefix
                                        #  `...<x>` form just matches `x`)

Branch + release model

  • stage — working branch.
  • master — push triggers the CI publish / deploy workflows. They are idempotent: same version twice is a no-op.

@postio/api-types tracks the spec version lockstep — the version in packages/api-types/package.json should match the @postio/openapi version it pins as a dev dependency.

Other packages have independent SemVer; bump packages/<name>/package.json#version when you intend a release.

Sibling deps must be "workspace:^", never a pinned registry version. @postio/core carried "@postio/api-types": "1.0.2" until 2026-08-12 and had been silently building its types against a stale published api-types instead of the one in this repo — so a field removed from the spec still appeared in core's and address-finder-bundled's generated .d.ts after a full rebuild. If a type change doesn't propagate, check this first.

Workflows

  • release-packages.yml — on master push under packages/**, walks every workspace package and runs pnpm publish for any whose version is new on npm. Always use pnpm publish (not npm publish) so workspace: dep ranges resolve at publish time — npm publish ships the literal workspace:^ string.
  • deploy-cdn-worker.yml — on push under cdn-worker/**, runs wrangler deploy (or --env stage).
  • deploy-cdn-bundles.yml — on push under packages/address-finder*/**, builds the bundled package and uploads to the CDN's R2 bucket.

Read the full file on GitHub · 142 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +11 lines · +248 tokens per session a6acdb1a357f
  2. 1mo ago Changed · +42 lines · +497 tokens per session 88aa8c77312d
  3. 2mo ago First seen · 89 lines · 930 tokens per session scan A 50556ef7baab

Subscribe to this mod's changes

postio-integrations CLAUDE.md is an instructions file published in the GitHub repository postio-uk/postio-integrations (0 stars, last pushed 14d ago), licensed MIT. It adds 1,675 tokens to every session, about $0.0067 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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